/*
 * Copyright (C) 2020 The LINN Authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
 * in compliance with the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License
 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 * or implied. See the License for the specific language governing permissions and limitations under
 * the License.
 */
package com.juqimiao.linn.extension;

import org.springframework.stereotype.Component;

import java.lang.annotation.*;

/**
 * 扩展注解，使用此注解标记类型是一个{@link ExtensionPointI}的Extension。
 *
 * @author  Collin Cai
 */
@Target({ElementType.TYPE})
@Retention(RetentionPolicy.RUNTIME)
@Inherited
@Component
public @interface Extension {

    /**
     * 业务识别码，具有默认值。
     *
     * @return 业务识别码。
     */
    String BusinessId() default "";

    /**
     * 用例，具有默认值。
     *
     * @return 用例。
     */
    String useCase() default "";

    /**
     * 场景，具有默认值。
     *
     * @return 场景。
     */
    String scenario() default "";

    /**
     * 特定业务扩展点接口
     *
     * @return 特定业务扩展点接口。
     */
    Class<?> Interface();
}
